Caliper adapter for oversize brake discs for radial type system (postmount). This assembly may use 4 bolts, 2 for the brake caliper and other 2 for fork (front) or bike frame (rear). Two bolts included. It is recommended to assembly by a specialist and not use axial caliper adapters (IS system) for discs bigger than ø180mm. GALFER decline all responsability in case of failure due to incorrect fitting. The following table shows the conversion from the original size of the fork or frame (without original adapters) to the oversized disc size: